| The following is a list of files and features that are going to be |
| removed in the kernel source tree. Every entry should contain what |
| exactly is going away, why it is happening, and who is going to be doing |
| the work. When the feature is removed from the kernel, it should also |
| be removed from this file. |
| |
| --------------------------- |
| |
| What: PRISM54 |
| When: 2.6.34 |
| |
| Why: prism54 FullMAC PCI / Cardbus devices used to be supported only by the |
| prism54 wireless driver. After Intersil stopped selling these |
| devices in preference for the newer more flexible SoftMAC devices |
| a SoftMAC device driver was required and prism54 did not support |
| them. The p54pci driver now exists and has been present in the kernel for |
| a while. This driver supports both SoftMAC devices and FullMAC devices. |
| The main difference between these devices was the amount of memory which |
| could be used for the firmware. The SoftMAC devices support a smaller |
| amount of memory. Because of this the SoftMAC firmware fits into FullMAC |
| devices's memory. p54pci supports not only PCI / Cardbus but also USB |
| and SPI. Since p54pci supports all devices prism54 supports |
| you will have a conflict. I'm not quite sure how distributions are |
| handling this conflict right now. prism54 was kept around due to |
| claims users may experience issues when using the SoftMAC driver. |
| Time has passed users have not reported issues. If you use prism54 |
| and for whatever reason you cannot use p54pci please let us know! |
| E-mail us at: linux-wireless@vger.kernel.org |
| |
| For more information see the p54 wiki page: |
| |
| http://wireless.kernel.org/en/users/Drivers/p54 |
| |
| Who: Luis R. Rodriguez <lrodriguez@atheros.com> |
| |
| --------------------------- |
| |
| What: IRQF_SAMPLE_RANDOM |
| Check: IRQF_SAMPLE_RANDOM |
| When: July 2009 |
| |
| Why: Many of IRQF_SAMPLE_RANDOM users are technically bogus as entropy |
| sources in the kernel's current entropy model. To resolve this, every |
| input point to the kernel's entropy pool needs to better document the |
| type of entropy source it actually is. This will be replaced with |
| additional add_*_randomness functions in drivers/char/random.c |
| |
| Who: Robin Getz <rgetz@blackfin.uclinux.org> & Matt Mackall <mpm@selenic.com> |
| |
| --------------------------- |
| |
| What: Deprecated snapshot ioctls |
| When: 2.6.36 |
| |
| Why: The ioctls in kernel/power/user.c were marked as deprecated long time |
| ago. Now they notify users about that so that they need to replace |
| their userspace. After some more time, remove them completely. |
| |
| Who: Jiri Slaby <jirislaby@gmail.com> |
| |
| --------------------------- |
| |
| What: The ieee80211_regdom module parameter |
| When: March 2010 / desktop catchup |
| |
| Why: This was inherited by the CONFIG_WIRELESS_OLD_REGULATORY code, |
| and currently serves as an option for users to define an |
| ISO / IEC 3166 alpha2 code for the country they are currently |
| present in. Although there are userspace API replacements for this |
| through nl80211 distributions haven't yet caught up with implementing |
| decent alternatives through standard GUIs. Although available as an |
| option through iw or wpa_supplicant its just a matter of time before |
| distributions pick up good GUI options for this. The ideal solution |
| would actually consist of intelligent designs which would do this for |
| the user automatically even when travelling through different countries. |
| Until then we leave this module parameter as a compromise. |
| |
| When userspace improves with reasonable widely-available alternatives for |
| this we will no longer need this module parameter. This entry hopes that |
| by the super-futuristically looking date of "March 2010" we will have |
| such replacements widely available. |
| |
| Who: Luis R. Rodriguez <lrodriguez@atheros.com> |
| |
| --------------------------- |
| |
| What: dev->power.power_state |
| When: July 2007 |
| Why: Broken design for runtime control over driver power states, confusing |
| driver-internal runtime power management with: mechanisms to support |
| system-wide sleep state transitions; event codes that distinguish |
| different phases of swsusp "sleep" transitions; and userspace policy |
| inputs. This framework was never widely used, and most attempts to |
| use it were broken. Drivers should instead be exposing domain-specific |
| interfaces either to kernel or to userspace. |
| Who: Pavel Machek <pavel@suse.cz> |
| |
| --------------------------- |
| |
| What: Video4Linux API 1 ioctls and from Video devices. |
| When: July 2009 |
| Files: include/linux/videodev.h |
| Check: include/linux/videodev.h |
| Why: V4L1 AP1 was replaced by V4L2 API during migration from 2.4 to 2.6 |
| series. The old API have lots of drawbacks and don't provide enough |
| means to work with all video and audio standards. The newer API is |
| already available on the main drivers and should be used instead. |
| Newer drivers should use v4l_compat_translate_ioctl function to handle |
| old calls, replacing to newer ones. |
| Decoder iocts are using internally to allow video drivers to |
| communicate with video decoders. This should also be improved to allow |
| V4L2 calls being translated into compatible internal ioctls. |
| Compatibility ioctls will be provided, for a while, via |
| v4l1-compat module. |
| Who: Mauro Carvalho Chehab <mchehab@infradead.org> |
| |
| --------------------------- |
| |
| What: PCMCIA control ioctl (needed for pcmcia-cs [cardmgr, cardctl]) |
| When: 2.6.35/2.6.36 |
| Files: drivers/pcmcia/: pcmcia_ioctl.c |
| Why: With the 16-bit PCMCIA subsystem now behaving (almost) like a |
| normal hotpluggable bus, and with it using the default kernel |
| infrastructure (hotplug, driver core, sysfs) keeping the PCMCIA |
| control ioctl needed by cardmgr and cardctl from pcmcia-cs is |
| unnecessary and potentially harmful (it does not provide for |
| proper locking), and makes further cleanups and integration of the |
| PCMCIA subsystem into the Linux kernel device driver model more |
| difficult. The features provided by cardmgr and cardctl are either |
| handled by the kernel itself now or are available in the new |
| pcmciautils package available at |
| http://kernel.org/pub/linux/utils/kernel/pcmcia/ |
| |
| For all architectures except ARM, the associated config symbol |
| has been removed from kernel 2.6.34; for ARM, it will be likely |
| be removed from kernel 2.6.35. The actual code will then likely |
| be removed from kernel 2.6.36. |
| Who: Dominik Brodowski <linux@dominikbrodowski.net> |
| |
| --------------------------- |
| |
| What: sys_sysctl |
| When: September 2010 |
| Option: CONFIG_SYSCTL_SYSCALL |
| Why: The same information is available in a more convenient from |
| /proc/sys, and none of the sysctl variables appear to be |
| important performance wise. |
| |
| Binary sysctls are a long standing source of subtle kernel |
| bugs and security issues. |
| |
| When I looked several months ago all I could find after |
| searching several distributions were 5 user space programs and |
| glibc (which falls back to /proc/sys) using this syscall. |
| |
| The man page for sysctl(2) documents it as unusable for user |
| space programs. |
| |
| sysctl(2) is not generally ABI compatible to a 32bit user |
| space application on a 64bit and a 32bit kernel. |
| |
| For the last several months the policy has been no new binary |
| sysctls and no one has put forward an argument to use them. |
| |
| Binary sysctls issues seem to keep happening appearing so |
| properly deprecating them (with a warning to user space) and a |
| 2 year grace warning period will mean eventually we can kill |
| them and end the pain. |
| |
| In the mean time individual binary sysctls can be dealt with |
| in a piecewise fashion. |
| |
| Who: Eric Biederman <ebiederm@xmission.com> |
| |
| --------------------------- |
| |
| What: remove EXPORT_SYMBOL(kernel_thread) |
| When: August 2006 |
| Files: arch/*/kernel/*_ksyms.c |
| Check: kernel_thread |
| Why: kernel_thread is a low-level implementation detail. Drivers should |
| use the <linux/kthread.h> API instead which shields them from |
| implementation details and provides a higherlevel interface that |
| prevents bugs and code duplication |
| Who: Christoph Hellwig <hch@lst.de> |
| |
| --------------------------- |
| |
| What: Unused EXPORT_SYMBOL/EXPORT_SYMBOL_GPL exports |
| (temporary transition config option provided until then) |
| The transition config option will also be removed at the same time. |
| When: before 2.6.19 |
| Why: Unused symbols are both increasing the size of the kernel binary |
| and are often a sign of "wrong API" |
| Who: Arjan van de Ven <arjan@linux.intel.com> |
| |
| --------------------------- |
| |
| What: PHYSDEVPATH, PHYSDEVBUS, PHYSDEVDRIVER in the uevent environment |
| When: October 2008 |
| Why: The stacking of class devices makes these values misleading and |
| inconsistent. |
| Class devices should not carry any of these properties, and bus |
| devices have SUBSYTEM and DRIVER as a replacement. |
| Who: Kay Sievers <kay.sievers@suse.de> |
| |
| --------------------------- |
| |
| What: ACPI procfs interface |
| When: July 2008 |
| Why: ACPI sysfs conversion should be finished by January 2008. |
| ACPI procfs interface will be removed in July 2008 so that |
| there is enough time for the user space to catch up. |
| Who: Zhang Rui <rui.zhang@intel.com> |
| |
| --------------------------- |
| |
| What: /proc/acpi/button |
| When: August 2007 |
| Why: /proc/acpi/button has been replaced by events to the input layer |
| since 2.6.20. |
| Who: Len Brown <len.brown@intel.com> |
| |
| --------------------------- |
| |
| What: /proc/acpi/event |
| When: February 2008 |
| Why: /proc/acpi/event has been replaced by events via the input layer |
| and netlink since 2.6.23. |
| Who: Len Brown <len.brown@intel.com> |
| |
| --------------------------- |
| |
| What: i386/x86_64 bzImage symlinks |
| When: April 2010 |
| |
| Why: The i386/x86_64 merge provides a symlink to the old bzImage |
| location so not yet updated user space tools, e.g. package |
| scripts, do not break. |
| Who: Thomas Gleixner <tglx@linutronix.de> |
| |
| --------------------------- |
| |
| What: GPIO autorequest on gpio_direction_{input,output}() in gpiolib |
| When: February 2010 |
| Why: All callers should use explicit gpio_request()/gpio_free(). |
| The autorequest mechanism in gpiolib was provided mostly as a |
| migration aid for legacy GPIO interfaces (for SOC based GPIOs). |
| Those users have now largely migrated. Platforms implementing |
| the GPIO interfaces without using gpiolib will see no changes. |
| Who: David Brownell <dbrownell@users.sourceforge.net> |
| --------------------------- |
| |
| What: b43 support for firmware revision < 410 |
| When: The schedule was July 2008, but it was decided that we are going to keep the |
| code as long as there are no major maintanance headaches. |
| So it _could_ be removed _any_ time now, if it conflicts with something new. |
| Why: The support code for the old firmware hurts code readability/maintainability |
| and slightly hurts runtime performance. Bugfixes for the old firmware |
| are not provided by Broadcom anymore. |
| Who: Michael Buesch <mb@bu3sch.de> |
| |
| --------------------------- |
| |
| What: /sys/o2cb symlink |
| When: January 2010 |
| Why: /sys/fs/o2cb is the proper location for this information - /sys/o2cb |
| exists as a symlink for backwards compatibility for old versions of |
| ocfs2-tools. 2 years should be sufficient time to phase in new versions |
| which know to look in /sys/fs/o2cb. |
| Who: ocfs2-devel@oss.oracle.com |
| |
| --------------------------- |
| |
| What: Ability for non root users to shm_get hugetlb pages based on mlock |
| resource limits |
| When: 2.6.31 |
| Why: Non root users need to be part of /proc/sys/vm/hugetlb_shm_group or |
| have CAP_IPC_LOCK to be able to allocate shm segments backed by |
| huge pages. The mlock based rlimit check to allow shm hugetlb is |
| inconsistent with mmap based allocations. Hence it is being |
| deprecated. |
| Who: Ravikiran Thirumalai <kiran@scalex86.org> |
| |
| --------------------------- |
| |
| What: CONFIG_THERMAL_HWMON |
| When: January 2009 |
| Why: This option was introduced just to allow older lm-sensors userspace |
| to keep working over the upgrade to 2.6.26. At the scheduled time of |
| removal fixed lm-sensors (2.x or 3.x) should be readily available. |
| Who: Rene Herman <rene.herman@gmail.com> |
| |
| --------------------------- |
| |
| What: Code that is now under CONFIG_WIRELESS_EXT_SYSFS |
| (in net/core/net-sysfs.c) |
| When: After the only user (hal) has seen a release with the patches |
| for enough time, probably some time in 2010. |
| Why: Over 1K .text/.data size reduction, data is available in other |
| ways (ioctls) |
| Who: Johannes Berg <johannes@sipsolutions.net> |
| |
| --------------------------- |
| |
| What: CONFIG_NF_CT_ACCT |
| When: 2.6.29 |
| Why: Accounting can now be enabled/disabled without kernel recompilation. |
| Currently used only to set a default value for a feature that is also |
| controlled by a kernel/module/sysfs/sysctl parameter. |
| Who: Krzysztof Piotr Oledzki <ole@ans.pl> |
| |
| --------------------------- |
| |
| What: sysfs ui for changing p4-clockmod parameters |
| When: September 2009 |
| Why: See commits 129f8ae9b1b5be94517da76009ea956e89104ce8 and |
| e088e4c9cdb618675874becb91b2fd581ee707e6. |
| Removal is subject to fixing any remaining bugs in ACPI which may |
| cause the thermal throttling not to happen at the right time. |
| Who: Dave Jones <davej@redhat.com>, Matthew Garrett <mjg@redhat.com> |
| |
| ----------------------------- |
| |
| What: __do_IRQ all in one fits nothing interrupt handler |
| When: 2.6.32 |
| Why: __do_IRQ was kept for easy migration to the type flow handlers. |
| More than two years of migration time is enough. |
| Who: Thomas Gleixner <tglx@linutronix.de> |
| |
| ----------------------------- |
| |
| What: fakephp and associated sysfs files in /sys/bus/pci/slots/ |
| When: 2011 |
| Why: In 2.6.27, the semantics of /sys/bus/pci/slots was redefined to |
| represent a machine's physical PCI slots. The change in semantics |
| had userspace implications, as the hotplug core no longer allowed |
| drivers to create multiple sysfs files per physical slot (required |
| for multi-function devices, e.g.). fakephp was seen as a developer's |
| tool only, and its interface changed. Too late, we learned that |
| there were some users of the fakephp interface. |
| |
| In 2.6.30, the original fakephp interface was restored. At the same |
| time, the PCI core gained the ability that fakephp provided, namely |
| function-level hot-remove and hot-add. |
| |
| Since the PCI core now provides the same functionality, exposed in: |
| |
| /sys/bus/pci/rescan |
| /sys/bus/pci/devices/.../remove |
| /sys/bus/pci/devices/.../rescan |
| |
| there is no functional reason to maintain fakephp as well. |
| |
| We will keep the existing module so that 'modprobe fakephp' will |
| present the old /sys/bus/pci/slots/... interface for compatibility, |
| but users are urged to migrate their applications to the API above. |
| |
| After a reasonable transition period, we will remove the legacy |
| fakephp interface. |
| Who: Alex Chiang <achiang@hp.com> |
| |
| --------------------------- |
| |
| What: CONFIG_RFKILL_INPUT |
| When: 2.6.33 |
| Why: Should be implemented in userspace, policy daemon. |
| Who: Johannes Berg <johannes@sipsolutions.net> |
| |
| --------------------------- |
| |
| What: CONFIG_INOTIFY |
| When: 2.6.33 |
| Why: last user (audit) will be converted to the newer more generic |
| and more easily maintained fsnotify subsystem |
| Who: Eric Paris <eparis@redhat.com> |
| |
| ---------------------------- |
| |
| What: lock_policy_rwsem_* and unlock_policy_rwsem_* will not be |
| exported interface anymore. |
| When: 2.6.33 |
| Why: cpu_policy_rwsem has a new cleaner definition making it local to |
| cpufreq core and contained inside cpufreq.c. Other dependent |
| drivers should not use it in order to safely avoid lockdep issues. |
| Who: Venkatesh Pallipadi <venkatesh.pallipadi@intel.com> |
| |
| ---------------------------- |
| |
| What: sound-slot/service-* module aliases and related clutters in |
| sound/sound_core.c |
| When: August 2010 |
| Why: OSS sound_core grabs all legacy minors (0-255) of SOUND_MAJOR |
| (14) and requests modules using custom sound-slot/service-* |
| module aliases. The only benefit of doing this is allowing |
| use of custom module aliases which might as well be considered |
| a bug at this point. This preemptive claiming prevents |
| alternative OSS implementations. |
| |
| Till the feature is removed, the kernel will be requesting |
| both sound-slot/service-* and the standard char-major-* module |
| aliases and allow turning off the pre-claiming selectively via |
| CONFIG_SOUND_OSS_CORE_PRECLAIM and soundcore.preclaim_oss |
| kernel parameter. |
| |
| After the transition phase is complete, both the custom module |
| aliases and switches to disable it will go away. This removal |
| will also allow making ALSA OSS emulation independent of |
| sound_core. The dependency will be broken then too. |
| Who: Tejun Heo <tj@kernel.org> |
| |
| ---------------------------- |
| |
| What: Support for VMware's guest paravirtuliazation technique [VMI] will be |
| dropped. |
| When: 2.6.37 or earlier. |
| Why: With the recent innovations in CPU hardware acceleration technologies |
| from Intel and AMD, VMware ran a few experiments to compare these |
| techniques to guest paravirtualization technique on VMware's platform. |
| These hardware assisted virtualization techniques have outperformed the |
| performance benefits provided by VMI in most of the workloads. VMware |
| expects that these hardware features will be ubiquitous in a couple of |
| years, as a result, VMware has started a phased retirement of this |
| feature from the hypervisor. We will be removing this feature from the |
| Kernel too. Right now we are targeting 2.6.37 but can retire earlier if |
| technical reasons (read opportunity to remove major chunk of pvops) |
| arise. |
| |
| Please note that VMI has always been an optimization and non-VMI kernels |
| still work fine on VMware's platform. |
| Latest versions of VMware's product which support VMI are, |
| Workstation 7.0 and VSphere 4.0 on ESX side, future maintainence |
| releases for these products will continue supporting VMI. |
| |
| For more details about VMI retirement take a look at this, |
| http://blogs.vmware.com/guestosguide/2009/09/vmi-retirement.html |
| |
| Who: Alok N Kataria <akataria@vmware.com> |
| |
| ---------------------------- |
| |
| What: Support for lcd_switch and display_get in asus-laptop driver |
| When: March 2010 |
| Why: These two features use non-standard interfaces. There are the |
| only features that really need multiple path to guess what's |
| the right method name on a specific laptop. |
| |
| Removing them will allow to remove a lot of code an significantly |
| clean the drivers. |
| |
| This will affect the backlight code which won't be able to know |
| if the backlight is on or off. The platform display file will also be |
| write only (like the one in eeepc-laptop). |
| |
| This should'nt affect a lot of user because they usually know |
| when their display is on or off. |
| |
| Who: Corentin Chary <corentin.chary@gmail.com> |
| |
| ---------------------------- |
| |
| What: zc0301 v4l driver |
| When: 2.6.35 |
| Files: drivers/media/video/zc0301/* |
| Why: Duplicate functionality with the gspca_zc3xx driver, zc0301 only |
| supports 2 USB-ID's (because it only supports a limited set of |
| sensors) wich are also supported by the gspca_zc3xx driver |
| (which supports 53 USB-ID's in total) |
| Who: Hans de Goede <hdegoede@redhat.com> |
| |
| ---------------------------- |
| |
| What: sysfs-class-rfkill state file |
| When: Feb 2014 |
| Files: net/rfkill/core.c |
| Why: Documented as obsolete since Feb 2010. This file is limited to 3 |
| states while the rfkill drivers can have 4 states. |
| Who: anybody or Florian Mickler <florian@mickler.org> |
| |
| ---------------------------- |
| |
| What: sysfs-class-rfkill claim file |
| When: Feb 2012 |
| Files: net/rfkill/core.c |
| Why: It is not possible to claim an rfkill driver since 2007. This is |
| Documented as obsolete since Feb 2010. |
| Who: anybody or Florian Mickler <florian@mickler.org> |
| |
| ---------------------------- |
| |
| What: capifs |
| When: February 2011 |
| Files: drivers/isdn/capi/capifs.* |
| Why: udev fully replaces this special file system that only contains CAPI |
| NCCI TTY device nodes. User space (pppdcapiplugin) works without |
| noticing the difference. |
| Who: Jan Kiszka <jan.kiszka@web.de> |
| |
| ---------------------------- |
| |
| What: KVM memory aliases support |
| When: July 2010 |
| Why: Memory aliasing support is used for speeding up guest vga access |
| through the vga windows. |
| |
| Modern userspace no longer uses this feature, so it's just bitrotted |
| code and can be removed with no impact. |
| Who: Avi Kivity <avi@redhat.com> |
| |
| ---------------------------- |
| |
| What: xtime, wall_to_monotonic |
| When: 2.6.36+ |
| Files: kernel/time/timekeeping.c include/linux/time.h |
| Why: Cleaning up timekeeping internal values. Please use |
| existing timekeeping accessor functions to access |
| the equivalent functionality. |
| Who: John Stultz <johnstul@us.ibm.com> |
| |
| ---------------------------- |
| |
| What: KVM kernel-allocated memory slots |
| When: July 2010 |
| Why: Since 2.6.25, kvm supports user-allocated memory slots, which are |
| much more flexible than kernel-allocated slots. All current userspace |
| supports the newer interface and this code can be removed with no |
| impact. |
| Who: Avi Kivity <avi@redhat.com> |
| |
| ---------------------------- |
| |
| What: KVM paravirt mmu host support |
| When: January 2011 |
| Why: The paravirt mmu host support is slower than non-paravirt mmu, both |
| on newer and older hardware. It is already not exposed to the guest, |
| and kept only for live migration purposes. |
| Who: Avi Kivity <avi@redhat.com> |
| |
| ---------------------------- |
| |
| What: iwlwifi 50XX module parameters |
| When: 2.6.40 |
| Why: The "..50" modules parameters were used to configure 5000 series and |
| up devices; different set of module parameters also available for 4965 |
| with same functionalities. Consolidate both set into single place |
| in drivers/net/wireless/iwlwifi/iwl-agn.c |
| |
| Who: Wey-Yi Guy <wey-yi.w.guy@intel.com> |
| |
| ---------------------------- |
| |
| What: iwl4965 alias support |
| When: 2.6.40 |
| Why: Internal alias support has been present in module-init-tools for some |
| time, the MODULE_ALIAS("iwl4965") boilerplate aliases can be removed |
| with no impact. |
| |
| Who: Wey-Yi Guy <wey-yi.w.guy@intel.com> |
| |
| --------------------------- |
| |
| What: xt_NOTRACK |
| Files: net/netfilter/xt_NOTRACK.c |
| When: April 2011 |
| Why: Superseded by xt_CT |
| Who: Netfilter developer team <netfilter-devel@vger.kernel.org> |
| |
| --------------------------- |
| |
| What: video4linux /dev/vtx teletext API support |
| When: 2.6.35 |
| Files: drivers/media/video/saa5246a.c drivers/media/video/saa5249.c |
| include/linux/videotext.h |
| Why: The vtx device nodes have been superseded by vbi device nodes |
| for many years. No applications exist that use the vtx support. |
| Of the two i2c drivers that actually support this API the saa5249 |
| has been impossible to use for a year now and no known hardware |
| that supports this device exists. The saa5246a is theoretically |
| supported by the old mxb boards, but it never actually worked. |
| |
| In summary: there is no hardware that can use this API and there |
| are no applications actually implementing this API. |
| |
| The vtx support still reserves minors 192-223 and we would really |
| like to reuse those for upcoming new functionality. In the unlikely |
| event that new hardware appears that wants to use the functionality |
| provided by the vtx API, then that functionality should be build |
| around the sliced VBI API instead. |
| Who: Hans Verkuil <hverkuil@xs4all.nl> |
| |
| ---------------------------- |
| |
| What: IRQF_DISABLED |
| When: 2.6.36 |
| Why: The flag is a NOOP as we run interrupt handlers with interrupts disabled |
| Who: Thomas Gleixner <tglx@linutronix.de> |
| |
| ---------------------------- |
| |
| What: old ieee1394 subsystem (CONFIG_IEEE1394) |
| When: 2.6.37 |
| Files: drivers/ieee1394/ except init_ohci1394_dma.c |
| Why: superseded by drivers/firewire/ (CONFIG_FIREWIRE) which offers more |
| features, better performance, and better security, all with smaller |
| and more modern code base |
| Who: Stefan Richter <stefanr@s5r6.in-berlin.de> |
| |
| ---------------------------- |
| |
| What: The acpi_sleep=s4_nonvs command line option |
| When: 2.6.37 |
| Files: arch/x86/kernel/acpi/sleep.c |
| Why: superseded by acpi_sleep=nonvs |
| Who: Rafael J. Wysocki <rjw@sisk.pl> |
| |
| ---------------------------- |